"Gat meat" refers to the meat of an old, lean goat. When searching for synonyms for this term, one can use phrases like "goat meat," "mutton," or "lamb." Goat meat is generally a leaner, more flavorful meat, and it tends to have a slightly gamey taste. Mutton refers to the meat of a mature sheep, which can be tough and strong-tasting. Lamb meat, on the other hand, comes from a young sheep, and it tends to be tender and milder in flavor. Regardless of the synonym used, these meats can be prepared in a variety of ways and make for excellent protein sources in any diet.